abstract

Recently the dispatch priority of renewable energy sources is getting higher due to CO2 reduction policies [2]. This reduces operating time and revenue for Gas Turbine Combined Cycle (GTCC) plants. Upgrade programs for GTCC give a financial benefit and global CO2 reduction by the effective use of renewables [1].

The knowledge of Original Equipment Manufacturers (OEMs) can improve the performance and reliability according to user requirements. Mitsubishi Hitachi Power System (MHPS) developed upgrade programs utilizing advanced technology to improve performance for existing F class GTCC units.

The F4 technology performance upgrade is a program to increase performance by turbine cooling air reduction. It can be applied to both 50 Hz and 60 Hz engines under the scale design rule.

The upgrade development was completed with verification at commercial plants. The expected performance enhancement was achieved successfully. This paper describes our approach and verification results for user’s asset value enhancement.

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